fix: 解决ctrl+c导致data race 问题

[B15030328]

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[codecov-commenter]

Codecov Report

Merging #357 (cc0c5ce) into master (f38db3d) will decrease coverage by 0.47%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##           master     #357      +/-   ##
==========================================
- Coverage   34.10%   33.63%   -0.48%     
==========================================
  Files          88       89       +1     
  Lines        6445     6268     -177     
==========================================
- Hits         2198     2108      -90     
+ Misses       4114     4032      -82     
+ Partials      133      128       -5     

Impacted Files	Coverage Δ
pkg/application/application.go	75.21% <66.66%> (-0.86%)	⬇️
pkg/executor/xxl/executor.go	38.02% <0.00%> (-2.70%)	⬇️
pkg/store/gorm/init.go	42.30% <0.00%> (ø)
pkg/store/gorm/config.go	0.00% <0.00%> (ø)
pkg/server/xgrpc/config.go	26.86% <0.00%> (ø)
pkg/xlog/hook.go	100.00% <0.00%> (ø)
pkg/client/resty/resty.go	90.00% <0.00%> (+0.09%)	⬆️
pkg/conf/datasource/apollo/apollo.go	93.10% <0.00%> (+0.51%)	⬆️
pkg/xlog/config.go	22.00% <0.00%> (+2.76%)	⬆️
... and 2 more

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